Abstract
High-temperature superconducting (HTS) coils are generally stable against transient thermal disturbances. Protection against spontaneous quenches is not a main design issue for an HTS coil. However, HTS coils used in many electric devices such as motors, generators, transformers, and current limiters will operate under over-current fault conditions, which may result in a coil quench and thermal runaway. Those electric devices should be able to ride through some grid fault conditions and remain functional. This requires a certain over-current capability of the HTS coils. This paper discusses the over-current requirements from grid faults and the thermal transient responses of a BSCCO coil. It presents the analysis results of the coil subjected to over-current pulses at different operating conditions. The study also investigates the thermal runaway current and its relationship with the over-current pulse.
Original language | English (US) |
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Pages (from-to) | 1971-1975 |
Number of pages | 5 |
Journal | IEEE Transactions on Applied Superconductivity |
Volume | 16 |
Issue number | 4 |
DOIs | |
State | Published - Dec 2006 |
Externally published | Yes |
Keywords
- High-temperature superconductors (HTS)
- Numerical modeling
- Superconducting generators
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering